On Cloud Size Chart

US	EU	UK
3.5	36	3
4	36.5	3.5
4.5	37	4
5	37.5	4.5
5.5	38	5
6	38.5	5.5
6.5	39	6
7	40	6.5
7.5	40.5	7
8	41	7.5
8.5	42	8
9	42.5	8.5
9.5	43	9
10	44	9.5
10.5	44.5	10
11	45	10.5
11.5	46	11
12	47	11.5
12.5	47.5	12
13	48	12.5
14	49	13.5